Evaluation of PIC 181 and Mn:PIN-PMN-PT thickness extensional rings for use in power ultrasonic devices for minimally invasive surgery
Evaluation of PIC 181 and Mn:PIN-PMN-PT thickness extensional rings for use in power ultrasonic devices for minimally invasive surgery
High-Q PIC 181 hard piezoceramic and high-k Mn:PIN-PMN-PT piezocrystal thickness extensional rings have been compared for use in the actuation of an ultrasonic scalpel for robotic endo-surgery. Measured material properties have been verified with both finite element analysis and laser vibrometry, to assess the materials' suitability for high power devices. Measured material properties have been verified with both finite element analysis and laser vibrometry, to assess material's suitability for high power devices. Measurements have shown a kt=0.25 and Qm=2200, and kt=0.62 and Qm=1100, for PIC 181 and Mn:PIN-PMN-PT respectively. Conventional bolted Langevin-style transducers (BLTs) have been successfully designed and built to resonate at 20 kHz for both piezomaterials. Modal parameters and performance have been modelled in FEA and measured via laser doppler vibrometry. When devices were excited with 50 Vrms at L1 a displacement of: 8 μm and 7 μm was measured for PIC-181 and Mn:PIN-PMN-PT BLTs respectively. Results suggest that a similar resonant frequency can be achieved with a shorter and equally functional device excited by Mn:PIN-PMN-PT piezocrystals.
Giuseppe Fenu, Nicola
84c938e2-db5f-4181-a182-810d4d965c32
Li, Xuan
ed01c0d5-68e0-4abe-8642-5b9ebf153314
Lucas, Margaret
e8d61c28-a042-4598-ad19-9931365811d2
Cochran, Sandy
a1aa23a6-0e9c-4afc-8d7e-ea5f3ef58736
September 2020
Giuseppe Fenu, Nicola
84c938e2-db5f-4181-a182-810d4d965c32
Li, Xuan
ed01c0d5-68e0-4abe-8642-5b9ebf153314
Lucas, Margaret
e8d61c28-a042-4598-ad19-9931365811d2
Cochran, Sandy
a1aa23a6-0e9c-4afc-8d7e-ea5f3ef58736
Giuseppe Fenu, Nicola, Li, Xuan, Lucas, Margaret and Cochran, Sandy
(2020)
Evaluation of PIC 181 and Mn:PIN-PMN-PT thickness extensional rings for use in power ultrasonic devices for minimally invasive surgery.
In 2020 IEEE International Ultrasonics Symposium (IUS).
IEEE..
(doi:10.1109/IUS46767.2020.9251369).
Record type:
Conference or Workshop Item
(Paper)
Abstract
High-Q PIC 181 hard piezoceramic and high-k Mn:PIN-PMN-PT piezocrystal thickness extensional rings have been compared for use in the actuation of an ultrasonic scalpel for robotic endo-surgery. Measured material properties have been verified with both finite element analysis and laser vibrometry, to assess the materials' suitability for high power devices. Measured material properties have been verified with both finite element analysis and laser vibrometry, to assess material's suitability for high power devices. Measurements have shown a kt=0.25 and Qm=2200, and kt=0.62 and Qm=1100, for PIC 181 and Mn:PIN-PMN-PT respectively. Conventional bolted Langevin-style transducers (BLTs) have been successfully designed and built to resonate at 20 kHz for both piezomaterials. Modal parameters and performance have been modelled in FEA and measured via laser doppler vibrometry. When devices were excited with 50 Vrms at L1 a displacement of: 8 μm and 7 μm was measured for PIC-181 and Mn:PIN-PMN-PT BLTs respectively. Results suggest that a similar resonant frequency can be achieved with a shorter and equally functional device excited by Mn:PIN-PMN-PT piezocrystals.
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Published date: September 2020
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Local EPrints ID: 497708
URI: http://eprints.soton.ac.uk/id/eprint/497708
PURE UUID: 8eb743c6-9826-4c8c-813d-a1e3dcc20730
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Date deposited: 29 Jan 2025 18:34
Last modified: 30 Jan 2025 03:32
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Author:
Nicola Giuseppe Fenu
Author:
Xuan Li
Author:
Margaret Lucas
Author:
Sandy Cochran
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